PHP is an HTML-embedded scripting language. PHP attempts to make iteasy for developers to write dynamically generated web pages. PHPalso offers built-in database integration for several commercialand non-commercial database management systems, so writing adatabase-enabled web page with PHP is fairly simple. The mostcommon use of PHP coding is probably as a replacement for CGIscripts.Using PHP as a CGI binary is an option for setups that for some reasondo not wish to integrate PHP as a module into server software (like Apache),or will use PHP with different kinds of CGI wrappers to create safechroot and setuid environments for scripts.This setup usually involves installing executable PHP binary to theweb server cgi-bin directory. CERT advisory CA-96.11 recommendsagainst placing any interpreters into cgi-bin.